Exterior shell of a truck cab fuel tank step fairing



FIG. 1 is a top perspective view of an exterior shell of a truck cabfuel tank step fairing showing our new design, it being understood thatthe broken lines are for illustrative purposes only and form no part ofthe claimed design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a side elevation view of one side thereof; and,

FIG. 6 is a side elevation view of the opposite side thereof.

The ornamental design for an exterior shell of a truck cab fuel tankstep fairing, as shown and described.